List of Law & Order characters
The American television police procedural and legal drama Law & Order follows the fictional cases of a group of police detectives and prosecutors who represent the public in the criminal justice system. Law & Order is known for its revolving cast, as most of its original stars had left the show within the first five seasons. The progression of the record for longest serving main cast members of the series is: Jerry Orbach as Det. Lennie Briscoe, S. Epatha Merkerson as Lt. Anita Van Buren and Sam Waterston as EADA/DA Jack McCoy.
Main characters
Prosecutors
Assistant District Attorneys
- In the 1997 season 7 episode "We Like Mike", Caleb Duff is listed as Assistant District Attorney beneath Adam Schiff as District Attorney and John J. McCoy as Executive Assistant District Attorney at the New York County District Attorney's Office, though he never appears on screen.
Recurring characters
Medical
| Name | Portrayed by | Years | Episodes |
| Psychologist Dr. Elizabeth Olivet | Carolyn McCormick | 1991–1997, 1999 & 2002–2009 | 87 |
| Medical Examiner Dr. Elizabeth Rodgers | Leslie Hendrix | 1992–2010 | 139 |
| Psychiatrist Dr. Emil Skoda | J. K. Simmons | 1997–2004 & 2010 | 44 |
NYPD officials
| Name | Portrayed by | Year | Episodes |
| Chief of Detectives Laird | James Biberi | 2008–2010 | 3 |
| Borough Detective Commander Joseph Strudevant | Dan Lauria | 2000–2001 | 2 |
| Borough Chief Commander James Dietz | Michael Cullen | 1998–1999 | 3 |